Here are couple of videos of a project I’ve been working on; a recreation of the Roland MC-4 CV/gate sequencer using an Arduino Mega. I acquired one of these old sequencers to use with my modular synth but unfortunately I’ve never managed to save & load programs on it (I think it’s busted). So I decided to have a go at making my own version, with the key feature of being able to save & load data to an SD card. There’s still some way to go but it’s getting there. I’ll eventually release the schematics & code once it’s in a decent (less shocking) state.